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com.crankuptheamps.client.JSONMessage Maven / Gradle / Ivy
////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2010-2021 60East Technologies Inc., All Rights Reserved.
//
// This computer software is owned by 60East Technologies Inc. and is
// protected by U.S. copyright laws and other laws and by international
// treaties. This computer software is furnished by 60East Technologies
// Inc. pursuant to a written license agreement and may be used, copied,
// transmitted, and stored only in accordance with the terms of such
// license agreement and with the inclusion of the above copyright notice.
// This computer software or any other copies thereof may not be provided
// or otherwise made available to any other person.
//
// U.S. Government Restricted Rights. This computer software: (a) was
// developed at private expense and is in all respects the proprietary
// information of 60East Technologies Inc.; (b) was not developed with
// government funds; (c) is a trade secret of 60East Technologies Inc.
// for all purposes of the Freedom of Information Act; and (d) is a
// commercial item and thus, pursuant to Section 12.212 of the Federal
// Acquisition Regulations (FAR) and DFAR Supplement Section 227.7202,
// Government's use, duplication or disclosure of the computer software
// is subject to the restrictions set forth by 60East Technologies Inc..
//
////////////////////////////////////////////////////////////////////////////
package com.crankuptheamps.client;
import com.crankuptheamps.client.fields.*;
import java.nio.BufferOverflowException;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import java.nio.charset.StandardCharsets;
import java.util.HashSet;
import java.util.Set;
/**
* A message subclass used by {@link JSONProtocolParser} to aid in building Message instances parsed from the
* {@link JSONProtocol} (i.e. the "amps" transport protocol).
* Generally not used directly by end user.
*/
public class JSONMessage extends Message {
private static final Charset LATIN1 = StandardCharsets.ISO_8859_1;
private static byte[] TG_COMMAND = null;
private static byte[] TG_COMMANDID = null;
private static byte[] TG_CORRELATION_ID = null;
private static byte[] TG_CLIENTNAME = null;
private static byte[] TG_USERID = null;
private static byte[] TG_TIMESTAMP = null;
private static byte[] TG_TOPIC = null;
private static byte[] TG_FILTER = null;
private static byte[] TG_ORDERBY = null;
private static byte[] TG_ACKTYPE = null;
private static byte[] TG_SUBID = null;
private static byte[] TG_VERSION = null;
private static byte[] TG_EXPIRATION = null;
private static byte[] TG_STATUS = null;
private static byte[] TG_QUERYID = null;
private static byte[] TG_SENDOOF = null;
private static byte[] TG_BATCHSIZE = null;
private static byte[] TG_TOPN = null;
private static byte[] TG_SOWKEYS = null;
private static byte[] TG_SEQUENCE = null;
private static byte[] TG_BOOKMARK = null;
private static byte[] TG_PASSWORD = null;
private static byte[] TG_MESSAGETYPE = null;
private static byte[] TG_RECORDS_INSERTED = null;
private static byte[] TG_RECORDS_UPDATED = null;
private static byte[] TG_RECORDS_DELETED = null;
private static byte[] TG_RECORDS_RETURNED = null;
private static byte[] TG_TOPIC_MATCHES = null;
private static byte[] TG_MATCHES = null;
private static byte[] TG_LENGTH = null;
private static byte[] TG_SOW_KEY = null;
private static byte[] TG_GROUP_SEQ_NO = null;
private static byte[] TG_SUB_IDS = null;
private static byte[] TG_REASON = null;
private static byte[] TG_OPTIONS = null;
private static byte[] COMMA = null;
private static byte[] QUOTE = null;
private static byte[] QUOTE_COLON = null;
private static byte[] OPEN_BRACE = null;
private static byte[] CLOSE_BRACE = null;
static
{
TG_COMMAND = "c".getBytes(LATIN1);
TG_COMMANDID = "cid".getBytes(LATIN1);
TG_CORRELATION_ID = "x".getBytes(LATIN1);
TG_CLIENTNAME = "client_name".getBytes(LATIN1);
TG_USERID = "user_id".getBytes(LATIN1);
TG_TOPIC = "t".getBytes(LATIN1);
TG_FILTER = "filter".getBytes(LATIN1);
TG_ORDERBY = "orderby".getBytes(LATIN1);
TG_ACKTYPE = "a".getBytes(LATIN1);
TG_SUBID = "sub_id".getBytes(LATIN1);
TG_VERSION = "v".getBytes(LATIN1);
TG_EXPIRATION = "e".getBytes(LATIN1);
TG_STATUS = "status".getBytes(LATIN1);
TG_QUERYID = "query_id".getBytes(LATIN1);
TG_BATCHSIZE = "batch_size".getBytes(LATIN1);
TG_TOPN = "top_n".getBytes(LATIN1);
TG_SOWKEYS = "sow_keys".getBytes(LATIN1);
TG_SEQUENCE = "s".getBytes(LATIN1);
TG_BOOKMARK = "bookmark".getBytes(LATIN1);
TG_PASSWORD = "pw".getBytes(LATIN1);
TG_RECORDS_INSERTED = "records_inserted".getBytes(LATIN1);
TG_RECORDS_UPDATED = "records_updated".getBytes(LATIN1);
TG_RECORDS_DELETED = "records_deleted".getBytes(LATIN1);
TG_RECORDS_RETURNED = "records_returned".getBytes(LATIN1);
TG_TOPIC_MATCHES = "topic_matches".getBytes(LATIN1);
TG_MATCHES = "matches".getBytes(LATIN1);
TG_LENGTH = "l".getBytes(LATIN1);
TG_SOW_KEY = "k".getBytes(LATIN1);
TG_GROUP_SEQ_NO = "group_seq_num".getBytes(LATIN1);
TG_SUB_IDS = "sub_ids".getBytes(LATIN1);
TG_REASON = "reason".getBytes(LATIN1);
TG_OPTIONS = "opts".getBytes(LATIN1);
TG_MESSAGETYPE = "mt".getBytes(LATIN1);
COMMA = ",".getBytes(LATIN1);
QUOTE = "\"".getBytes(LATIN1);
QUOTE_COLON = "\":".getBytes(LATIN1);
OPEN_BRACE = "{".getBytes(LATIN1);
CLOSE_BRACE = "}".getBytes(LATIN1);
}
public JSONMessage(CharsetEncoder encoder,
CharsetDecoder decoder)
{
super(encoder, decoder);
}
private static final Set QUOTED_CLASSES = new HashSet();
static
{
QUOTED_CLASSES.add(StringField.class);
QUOTED_CLASSES.add(CommandField.class);
QUOTED_CLASSES.add(AckTypeField.class);
QUOTED_CLASSES.add(BookmarkField.class);
QUOTED_CLASSES.add(StatusField.class);
QUOTED_CLASSES.add(OptionsField.class);
}
final private boolean needsEscape(byte[] fieldName)
{
switch((char)fieldName[0])
{
case 's':
{
switch(fieldName.length)
{
case 6: //sub_id
case 7: //sub_ids
return true;
default:
return false;
}
}
case 'c': //client
case 'f': //filter
case 't': //topic
case 'u': //user_id
case 'p': //pw
return true;
default:
return false;
}
}
final private void escapeField(ByteBuffer b, Field field)
{
for(int i =0; i 0) b.put(COMMA);
b.put(QUOTE);
b.put(tag);
b.put(QUOTE_COLON);
final boolean quoted = QUOTED_CLASSES.contains(field.getClass());
if (quoted) b.put(QUOTE);
if(needsEscape(tag))
escapeField(b, field);
else
b.put(field.buffer, field.position, field.length);
if (quoted) b.put(QUOTE);
return 1;
}
public SerializationResult serialize(ByteBuffer b)
{
try
{
b.put(OPEN_BRACE);
int count = 0;
count += serializeMessageProperty(b, TG_COMMAND, _Command, count);
count += serializeMessageProperty(b, TG_COMMANDID, _CommandId, count);
count += serializeMessageProperty(b, TG_CORRELATION_ID, _CorrelationId, count);
count += serializeMessageProperty(b, TG_CLIENTNAME, _ClientName, count);
count += serializeMessageProperty(b, TG_USERID, _UserId, count);
count += serializeMessageProperty(b, TG_PASSWORD, _Password, count);
count += serializeMessageProperty(b, TG_TOPIC, _Topic, count);
count += serializeMessageProperty(b, TG_FILTER, _Filter, count);
count += serializeMessageProperty(b, TG_ORDERBY, _OrderBy, count);
count += serializeMessageProperty(b, TG_ACKTYPE, _AckType, count);
count += serializeMessageProperty(b, TG_OPTIONS, _Options, count);
count += serializeMessageProperty(b, TG_SUBID, _SubId, count);
count += serializeMessageProperty(b, TG_VERSION, _Version, count);
count += serializeMessageProperty(b, TG_EXPIRATION, _Expiration, count);
count += serializeMessageProperty(b, TG_STATUS, _Status, count);
count += serializeMessageProperty(b, TG_QUERYID, _QueryId, count);
count += serializeMessageProperty(b, TG_BATCHSIZE, _BatchSize, count);
count += serializeMessageProperty(b, TG_BOOKMARK, _Bookmark, count);
count += serializeMessageProperty(b, TG_SEQUENCE, _Sequence, count);
count += serializeMessageProperty(b, TG_TOPN, _TopN, count);
count += serializeMessageProperty(b, TG_SOWKEYS, _SowKeys, count);
count += serializeMessageProperty(b, TG_SOW_KEY, _SowKey, count);
serializeMessageProperty(b, TG_MESSAGETYPE, _MessageType, count);
b.put(CLOSE_BRACE);
if(_Data.buffer != null)
{
b.put(_Data.buffer, _Data.position, _Data.length);
}
//dumpBuffer("SENDING> ",b.array(),4,b.position()-4);
}
catch (BufferOverflowException e)
{
return SerializationResult.BufferTooSmall;
}
return SerializationResult.OK;
}
/**
* Copies the JSON Message to a new JSON Message.
* @return New JSON Message.
*/
public Message copy()
{
JSONMessage m = new JSONMessage(this.encoder, this.decoder);
_copyTo(m);
return m;
}
/* Comment since not used.
static private void dumpBuffer(String prefix,byte[] buffer,int start,int length)
{
System.err.print(prefix);
for(int j = start; j < start+length; ++j)
{
try
{
System.err.print(new String(buffer,j,1,LATIN1));
}
catch(Exception e)
{
System.err.print("{error}");
}
}
System.out.println();
}
*/
}
